X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=fio.c;h=b5fada8983e90c2caeb4ca7c4c9ed1bed9a63e5a;hp=c5b85aeb8c88ca2ef732135fc74ffb8d789325c1;hb=6d86144dd10b05e8b82e9b895c35dd778e5e71ab;hpb=c6441dc9e95cba2a31dec63272917fdf496c75c4 diff --git a/fio.c b/fio.c index c5b85aeb..b5fada89 100644 --- a/fio.c +++ b/fio.c @@ -37,16 +37,19 @@ #include "fio.h" #include "os.h" -static unsigned long page_mask; +unsigned long page_mask; +unsigned long page_size; #define ALIGN(buf) \ (char *) (((unsigned long) (buf) + page_mask) & ~page_mask) int groupid = 0; int thread_number = 0; +int nr_process = 0; +int nr_thread = 0; int shm_id = 0; int temp_stall_ts; -static volatile int startup_sem; +static struct fio_sem *startup_sem; static volatile int fio_abort; static int exit_value; @@ -60,17 +63,20 @@ static inline void td_set_runstate(struct thread_data *td, int runstate) td->runstate = runstate; } -static void terminate_threads(int group_id, int forced_kill) +static void terminate_threads(int group_id) { struct thread_data *td; int i; for_each_td(td, i) { if (group_id == TERMINATE_ALL || groupid == td->groupid) { + /* + * if the thread is running, just let it exit + */ + if (td->runstate < TD_RUNNING) + kill(td->pid, SIGQUIT); td->terminate = 1; td->start_delay = 0; - if (forced_kill) - td_set_runstate(td, TD_EXITED); } } } @@ -86,7 +92,7 @@ static void sig_handler(int sig) default: printf("\nfio: terminating on signal %d\n", sig); fflush(stdout); - terminate_threads(TERMINATE_ALL, 0); + terminate_threads(TERMINATE_ALL); break; } } @@ -100,6 +106,12 @@ static int check_min_rate(struct thread_data *td, struct timeval *now) unsigned long spent; unsigned long rate; + /* + * No minimum rate set, always ok + */ + if (!td->ratemin) + return 0; + /* * allow a 2 second settle period in the beginning */ @@ -120,12 +132,12 @@ static int check_min_rate(struct thread_data *td, struct timeval *now) return 0; if (bytes < td->rate_bytes) { - fprintf(f_out, "%s: min rate %u not met\n", td->name, td->ratemin); + log_err("%s: min rate %u not met\n", td->name, td->ratemin); return 1; } else { rate = (bytes - td->rate_bytes) / spent; if (rate < td->ratemin || bytes < td->rate_bytes) { - fprintf(f_out, "%s: min rate %u not met, got %luKiB/sec\n", td->name, td->ratemin, rate); + log_err("%s: min rate %u not met, got %luKiB/sec\n", td->name, td->ratemin, rate); return 1; } } @@ -237,20 +249,23 @@ requeue: } /* - * The main verify engine. Runs over the writes we previusly submitted, + * The main verify engine. Runs over the writes we previously submitted, * reads the blocks back in, and checks the crc/md5 of the data. */ static void do_verify(struct thread_data *td) { struct fio_file *f; struct io_u *io_u; - int ret, i, min_events; + int ret, min_events; + unsigned int i; /* * sync io first and invalidate cache, to make sure we really * read from disk. */ for_each_file(td, f, i) { + if (!(f->flags & FIO_FILE_OPEN)) + continue; if (fio_io_sync(td, f)) break; if (file_invalidate_cache(td, f)) @@ -264,6 +279,8 @@ static void do_verify(struct thread_data *td) io_u = NULL; while (!td->terminate) { + int ret2; + io_u = __get_io_u(td); if (!io_u) break; @@ -284,29 +301,39 @@ static void do_verify(struct thread_data *td) } io_u->end_io = verify_io_u; -requeue: - ret = td_io_queue(td, io_u); + ret = td_io_queue(td, io_u); switch (ret) { case FIO_Q_COMPLETED: if (io_u->error) ret = -io_u->error; - if (io_u->xfer_buflen != io_u->resid && io_u->resid) { + else if (io_u->resid) { int bytes = io_u->xfer_buflen - io_u->resid; + /* + * zero read, fail + */ + if (!bytes) { + td_verror(td, ENODATA, "full resid"); + put_io_u(td, io_u); + break; + } io_u->xfer_buflen = io_u->resid; io_u->xfer_buf += bytes; - goto requeue; + requeue_io_u(td, &io_u); + } else { + ret = io_u_sync_complete(td, io_u); + if (ret < 0) + break; } - ret = io_u_sync_complete(td, io_u); - if (ret < 0) - break; continue; case FIO_Q_QUEUED: break; case FIO_Q_BUSY: requeue_io_u(td, &io_u); - ret = td_io_commit(td); + ret2 = td_io_commit(td); + if (ret2 < 0) + ret = ret2; break; default: assert(ret < 0); @@ -348,31 +375,6 @@ requeue: td_set_runstate(td, TD_RUNNING); } -/* - * Not really an io thread, all it does is burn CPU cycles in the specified - * manner. - */ -static void do_cpuio(struct thread_data *td) -{ - struct timeval e; - int split = 100 / td->cpuload; - int i = 0; - - while (!td->terminate) { - fio_gettime(&e, NULL); - - if (runtime_exceeded(td, &e)) - break; - - if (!(i % split)) - __usec_sleep(10000); - else - usec_sleep(td, 10000); - - i++; - } -} - /* * Main IO worker function. It retrieves io_u's to process and queues * and reaps them, checking for rate and errors along the way. @@ -381,7 +383,8 @@ static void do_io(struct thread_data *td) { struct timeval s; unsigned long usec; - int i, ret = 0; + unsigned int i; + int ret = 0; td_set_runstate(td, TD_RUNNING); @@ -390,6 +393,7 @@ static void do_io(struct thread_data *td) long bytes_done = 0; int min_evts = 0; struct io_u *io_u; + int ret2; if (td->terminate) break; @@ -404,26 +408,33 @@ static void do_io(struct thread_data *td) put_io_u(td, io_u); break; } -requeue: - ret = td_io_queue(td, io_u); + ret = td_io_queue(td, io_u); switch (ret) { case FIO_Q_COMPLETED: - if (io_u->error) { - ret = io_u->error; - break; - } - if (io_u->xfer_buflen != io_u->resid && io_u->resid) { + if (io_u->error) + ret = -io_u->error; + else if (io_u->resid) { int bytes = io_u->xfer_buflen - io_u->resid; + /* + * zero read, fail + */ + if (!bytes) { + td_verror(td, ENODATA, "full resid"); + put_io_u(td, io_u); + break; + } + io_u->xfer_buflen = io_u->resid; io_u->xfer_buf += bytes; - goto requeue; + requeue_io_u(td, &io_u); + } else { + fio_gettime(&comp_time, NULL); + bytes_done = io_u_sync_complete(td, io_u); + if (bytes_done < 0) + ret = bytes_done; } - fio_gettime(&comp_time, NULL); - bytes_done = io_u_sync_complete(td, io_u); - if (bytes_done < 0) - ret = bytes_done; break; case FIO_Q_QUEUED: /* @@ -433,12 +444,12 @@ requeue: */ if (td->io_ops->commit == NULL) io_u_queued(td, io_u); - else if (td->io_u_queued >= td->iodepth_batch) - ret = td_io_commit(td); break; case FIO_Q_BUSY: requeue_io_u(td, &io_u); - ret = td_io_commit(td); + ret2 = td_io_commit(td); + if (ret2 < 0) + ret = ret2; break; default: assert(ret < 0); @@ -481,7 +492,7 @@ requeue: if (check_min_rate(td, &comp_time)) { if (exitall_on_terminate) - terminate_threads(td->groupid, 0); + terminate_threads(td->groupid); td_verror(td, ENODATA, "check_min_rate"); break; } @@ -512,8 +523,12 @@ requeue: if (should_fsync(td) && td->end_fsync) { td_set_runstate(td, TD_FSYNCING); - for_each_file(td, f, i) + + for_each_file(td, f, i) { + if (!(f->flags & FIO_FILE_OPEN)) + continue; fio_io_sync(td, f); + } } } else cleanup_pending_aio(td); @@ -554,9 +569,6 @@ static int init_io_u(struct thread_data *td) int i, max_units; char *p; - if (td->io_ops->flags & FIO_CPUIO) - return 0; - if (td->io_ops->flags & FIO_SYNCIO) max_units = 1; else @@ -599,7 +611,7 @@ static int switch_ioscheduler(struct thread_data *td) FILE *f; int ret; - if (td->io_ops->flags & FIO_CPUIO) + if (td->io_ops->flags & FIO_DISKLESSIO) return 0; sprintf(tmp, "%s/queue/scheduler", td->sysfs_root); @@ -644,27 +656,30 @@ static int switch_ioscheduler(struct thread_data *td) return 0; } -static void clear_io_state(struct thread_data *td) +static int clear_io_state(struct thread_data *td) { struct fio_file *f; - int i; + unsigned int i; + int ret; td->ts.stat_io_bytes[0] = td->ts.stat_io_bytes[1] = 0; td->this_io_bytes[0] = td->this_io_bytes[1] = 0; td->zone_bytes = 0; + td->rate_bytes = 0; td->last_was_sync = 0; - for_each_file(td, f, i) { - f->last_completed_pos = 0; - - f->last_pos = 0; - if (td->io_ops->flags & FIO_SYNCIO) - lseek(f->fd, SEEK_SET, 0); + for_each_file(td, f, i) + td_io_close_file(td, f); - if (f->file_map) - memset(f->file_map, 0, f->num_maps * sizeof(long)); + ret = 0; + for_each_file(td, f, i) { + ret = td_io_open_file(td, f); + if (ret) + break; } + + return ret; } /* @@ -675,6 +690,7 @@ static void *thread_main(void *data) { unsigned long long runtime[2]; struct thread_data *td = data; + int clear_state; if (!td->use_thread) setsid(); @@ -688,50 +704,50 @@ static void *thread_main(void *data) INIT_LIST_HEAD(&td->io_log_list); if (init_io_u(td)) - goto err; + goto err_sem; if (fio_setaffinity(td) == -1) { td_verror(td, errno, "cpu_set_affinity"); - goto err; + goto err_sem; } if (init_iolog(td)) - goto err; + goto err_sem; if (td->ioprio) { if (ioprio_set(IOPRIO_WHO_PROCESS, 0, td->ioprio) == -1) { td_verror(td, errno, "ioprio_set"); - goto err; + goto err_sem; } } if (nice(td->nice) == -1) { td_verror(td, errno, "nice"); - goto err; + goto err_sem; } - if (init_random_state(td)) - goto err; - if (td->ioscheduler && switch_ioscheduler(td)) - goto err; + goto err_sem; td_set_runstate(td, TD_INITIALIZED); - fio_sem_up(&startup_sem); - fio_sem_down(&td->mutex); + fio_sem_up(startup_sem); + fio_sem_down(td->mutex); + + /* + * the ->mutex semaphore is now no longer used, close it to avoid + * eating a file descriptor + */ + fio_sem_remove(td->mutex); if (!td->create_serialize && setup_files(td)) goto err; - if (open_files(td)) - goto err; - /* - * Do this late, as some IO engines would like to have the - * files setup prior to initializing structures. - */ if (td_io_init(td)) goto err; + if (open_files(td)) + goto err; + if (td->exec_prerun) { if (system(td->exec_prerun) < 0) goto err; @@ -742,6 +758,7 @@ static void *thread_main(void *data) getrusage(RUSAGE_SELF, &td->ts.ru_start); runtime[0] = runtime[1] = 0; + clear_state = 0; while (td->loops--) { fio_gettime(&td->start, NULL); memcpy(&td->ts.stat_sample_time, &td->start, sizeof(td->start)); @@ -749,13 +766,14 @@ static void *thread_main(void *data) if (td->ratemin) memcpy(&td->lastrate, &td->ts.stat_sample_time, sizeof(td->lastrate)); - clear_io_state(td); + if (clear_state && clear_io_state(td)) + break; + prune_io_piece_log(td); - if (td->io_ops->flags & FIO_CPUIO) - do_cpuio(td); - else - do_io(td); + do_io(td); + + clear_state = 1; if (td_read(td) && td->io_bytes[DDIR_READ]) runtime[DDIR_READ] += utime_since_now(&td->start); @@ -768,7 +786,9 @@ static void *thread_main(void *data) if (td->verify == VERIFY_NONE) continue; - clear_io_state(td); + if (clear_io_state(td)) + break; + fio_gettime(&td->start, NULL); do_verify(td); @@ -780,9 +800,11 @@ static void *thread_main(void *data) } update_rusage_stat(td); - fio_gettime(&td->end_time, NULL); - td->runtime[0] = runtime[0] / 1000; - td->runtime[1] = runtime[1] / 1000; + td->ts.runtime[0] = runtime[0] / 1000; + td->ts.runtime[1] = runtime[1] / 1000; + td->ts.total_run_time = mtime_since_now(&td->epoch); + td->ts.io_bytes[0] = td->io_bytes[0]; + td->ts.io_bytes[1] = td->io_bytes[1]; if (td->ts.bw_log) finish_log(td, td->ts.bw_log, "bw"); @@ -798,7 +820,7 @@ static void *thread_main(void *data) } if (exitall_on_terminate) - terminate_threads(td->groupid, 0); + terminate_threads(td->groupid); err: if (td->error) @@ -808,6 +830,9 @@ err: cleanup_io_u(td); td_set_runstate(td, TD_EXITED); return (void *) (unsigned long) td->error; +err_sem: + fio_sem_up(startup_sem); + goto err; } /* @@ -852,7 +877,7 @@ static void reap_threads(int *nr_running, int *t_rate, int *m_rate) * ->io_ops is NULL for a thread that has closed its * io engine */ - if (td->io_ops && td->io_ops->flags & FIO_CPUIO) + if (td->io_ops && !strcmp(td->io_ops->name, "cpuio")) cputhreads++; if (!td->pid || td->runstate == TD_REAPED) @@ -884,7 +909,8 @@ static void reap_threads(int *nr_running, int *t_rate, int *m_rate) if (WIFSIGNALED(status)) { int sig = WTERMSIG(status); - log_err("fio: pid=%d, got signal=%d\n", td->pid, sig); + if (sig != SIGQUIT) + log_err("fio: pid=%d, got signal=%d\n", td->pid, sig); td_set_runstate(td, TD_REAPED); goto reaped; } @@ -918,7 +944,7 @@ reaped: } if (*nr_running == cputhreads && !pending) - terminate_threads(TERMINATE_ALL, 0); + terminate_threads(TERMINATE_ALL); } /* @@ -934,7 +960,15 @@ static void run_threads(void) return; if (!terse_output) { - printf("Starting %d thread%s\n", thread_number, thread_number > 1 ? "s" : ""); + printf("Starting "); + if (nr_thread) + printf("%d thread%s", nr_thread, nr_thread > 1 ? "s" : ""); + if (nr_process) { + if (nr_thread) + printf(" and "); + printf("%d process%s", nr_process, nr_process > 1 ? "es" : ""); + } + printf("\n"); fflush(stdout); } @@ -1009,23 +1043,22 @@ static void run_threads(void) */ td_set_runstate(td, TD_CREATED); map[this_jobs++] = td; - fio_sem_init(&startup_sem, 1); nr_started++; if (td->use_thread) { if (pthread_create(&td->thread, NULL, thread_main, td)) { perror("thread_create"); nr_started--; + break; } } else { - if (fork()) - fio_sem_down(&startup_sem); - else { + if (!fork()) { int ret = fork_main(shm_id, i); exit(ret); } } + fio_sem_down(startup_sem); } /* @@ -1080,7 +1113,7 @@ static void run_threads(void) m_rate += td->ratemin; t_rate += td->rate; todo--; - fio_sem_up(&td->mutex); + fio_sem_up(td->mutex); } reap_threads(&nr_running, &t_rate, &m_rate); @@ -1123,6 +1156,7 @@ int main(int argc, char *argv[]) return 1; } + page_size = ps; page_mask = ps - 1; if (write_bw_log) { @@ -1130,6 +1164,8 @@ int main(int argc, char *argv[]) setup_log(&agg_io_log[DDIR_WRITE]); } + startup_sem = fio_sem_init(0); + set_genesis_time(); disk_util_timer_arm(); @@ -1144,5 +1180,6 @@ int main(int argc, char *argv[]) } } + fio_sem_remove(startup_sem); return exit_value; }